Need help in this work

[ravichandran]

hello,
i am using javascript for to make digits validation in one text box.
the following are the allowable input for that particular text box

1.That is in first digit should be 1
2.the second digit should be between 1to6
3.the third digit shoule be (.)dot
4.forth and final digit should be between 1to9

In that process 1 and 2 are working good.
3 and 4 not working properly.
my coding is as followsfunction validatecredit(x)
{
var maintainplus = '';
var numval = x.value;
if (numval.charAt(0)=='1')
{
alert("1");
if(numval.charAt(1)>'0'|| numval.chatAt(1)>7)
{
alert("2");
if(numval.charAt(2))
{
alert("3");
if(numval.charAt(3))
{
alert("4");
if(numval.charAt(4))
{
alert("5");
curphonevar=numval.replace(/[\\A-Za-z!";£$%^&*+_={};:'@#~,.¦\/<>?|`¬\]\[]/g,'');
x.value = maintainplus + curphonevar;
var maintainplus = '';
x.focus;
return true;
}
else
{
curphonevar=numval.replace(/[\\A-Za-z!"£$%^&*+_={};:'@#~,.¦\/<>?|`¬\]\[]/g,'');
x.value = maintainplus + curphonevar;
var maintainplus = '';
x.focus;
return true;
}
}
else
{
curphonevar=numval.replace(/[\\A-Za-z!"£$%^&*+_={};:'@#~,.¦\/<>?|`¬\]\[]/g,'');
x.value = maintainplus + curphonevar;
var maintainplus = '';
x.focus;
return true;

}

}
else
{
curphonevar=numval.replace(/[\\A-Za-z!"£$%^&*+_={};:'@#~,¦\/<>?|`¬\]\[]/g,'');
x.value = maintainplus + curphonevar;
var maintainplus = '';
x.focus;
return true;
}
}
else
{

alert("else 2");
curphonevar=numval.replace(/[\\A-Za-z2-9!"£$%^&*+_={};0:'@#~,.¦\/<>?|`¬\]\[]/g,'');
x.value = maintainplus + curphonevar;
var maintainplus = '';
x.focus;
return true;
}
}
else
{
alert("else 1");
curphonevar=numval.replace(/[\\A-Za-z2-9!"£$%^&*+_={};0:'@#~,.¦\/<>?|`¬\]\[]/g,'');
x.value = maintainplus + curphonevar;
var maintainplus = '';
x.focus;
return true;
}

}


pls help us to make process 3 and 4 to work well
plsreply me if u know the answer

[Morishani]

I advice you to learn regular expressions, It will shorten your code dramaticly and will make it work faster.

http://www.regular-expressions.info/javascript.html

Good luck! :)

[kmap]

Is it a four digit number?

you are checking more that four digits in this program

Regards

Alex

[ravichandran]

Thanks for reply
I have used 5 digits in my program.The text fileld should be like this:
1.The first digit must be "1".
2.The second digit should be between 1 to 6.
3.The third digit must be dot(.)
4.The forth and fifth digit should be between 0 to 9

for example the number is: 12.90

please help me to solve this problem

[WebGodzilla]

function validatecredit(x)
{
return x.match( /^1[1-6]\.[0-9]{2}$/ );
}

If the string is what you need, the function returns the string, otherwise null. If you put it in some if() clause, it will cast to true or false, respectively.